Strand-working mechanism



s. M MuLLAN 1,706,702

STRAND WORKING MECHANISM March 26, 1929.

Filed Oct. 22. 924

"Patented Mariza, 1929. i I l,706,702 UNITED STATES PATENT OFFICE.`

SAIUEL MCMULLAN, 01' BIVEBSIDE, ILLINOIS, ASSIGNOR TQ WESTERN' E LECTBIC COIPANZY, INCOBPORATE'D, OF NEW YORK, N. Y., A COBPOBATION OF NEW YORK.

STRAND-WORXIN MECEANISM.

Application filed October 22, 1924. Serial No. 745990.

V This invention relates to improvements in be coupled to and from the capstans through strand working mechanisms, and more para suitable clutch mechanism. Mounted ticularl to wire drawing machines. above the shaft 18 are a plurality of ide An o ject of the invention is to provide rolls 19 independentl rotatable upon a orian improved mounting for the dies in a wire zontally disposed saft suitabl supoo drawing machine, wherein each die will be Eorted within the compartment 12. ounted positioned at a predetermined angle to the etween the sheaves 19 and the capstans axis of the portion of the wire being drawn 17-17 is a die drawing block 21 carred by therethroug a bracket 22 Secured to the back wall of the -w In acco'rdace with one feature of the incompartment 12. The block 21 will be de- 55 vaution a wire drawin machine employing scribed in greater detail hereinafter. For a uniform diameter gui e rolls cooperating detailed illustration and description of the with a stepped drawing element, thus caussheaves 19 and 'the driving mechanism for ing each pass.of,the wire through the dies the capstan shaft 18, reference is made to 15 to assume a different angle is provided with Patent 1,598,937 to J. N. Selvig, dated Sep- 70 a die drawing block provided with a pluraltenber 7, 1926. The details of this construcity of seats f or positioning drawing dies, tion have been omitted from the present apw erein the seats are -formed at predeterlication for the sake of Simplicity, since a mined and diifering angles so that the axis ull description of the sheaves and driving ao of the reducing aperture of each die placed mechanism for the capstan shaft 18 is not 15 thereon will coincide with the axis of the essential to a complete understanding of the 55 shown) carried by the portion of the wire being drawn therethrough.

It s believed that the invention will be clearly understood from the following description taken in connection with the accompanying drawings illustrating in one embodiment thereof each of the several features of the invention, in which so Fig. 1 is a front elevation, par'ts being broken awa showing a wire drawing machina embo ying the features of the invention; v

Fig. 2 is an enlarged fra view showin drawing bloc and i Figs. 3 and 4 are fragmentary vertical sectional views taken on the lines 3-3 and 4-4 respeetively of Fig. 2 looking in the 0 direction indicated by t e arrows, showing two of the angularly disposed die seats.

entary plan Referring now to Fg. 1 of the drawings 11 represents airamework which supports a compartment 12 of a substantially rectangu- 5 lar shape having top, bottom, back and side walls 13, 14, 15, and 16, respectively. The

` I front of the compartment may be closed a he suitable door or doors (not shown).

wire drawing apparatus s mounted within the compartment and comprises a horizontally disposed shaft 18 upon which is mounted a plurality of integral capstans 17--17 of different diameters. The shaft 18 is driven through suitable geari by a motor (not amewqrk and may the guide rol s and the diej present invention.

A supply of wire 24 to be reduced in diameter is carried by a supply spool 25 mounted upright upon one end t ereof at the front of so the machine. The spool 25 is provided with an auxiliary wire storage means. For a detailed illustration and description of the spool 25 and its auxiliary wire storage means, reference is made to applicant's coending application, Serial No. 164,185, filed anua 28, 1927. T he wire 24 is guided from t e sup ly spool 25 over and under pulleys 26 an 27 respectively (Fi 1) and then over the rear gude roll 19 an throu h the first reducing die 28 earried by the ie block 21. -The wire is then wound once around the capstan 17 of smallest diameter, after which it is passed upwa'd and over the next roll 19 an through the next reduc- 5 ing die 28 carried by the block 21. The wire is then wound around the next ca tan and V r then again over the next roll an thro h the next reducing1 die, etc. until it is fu y drawn down to t last reducing die. From the final reducing die the drawn wire 24: passes around the capstan 17 of largest diameter and is guided by a pulley 29 mounted 'on a stationary arm 31 adjustably positioned on the shaft 20.

From the pulley 29 the wire may ass v through an opening in the closed doors not shown) to a pulley 32 carried by an arm 33, and thence is led to a take-up spool 34 driven by suitable mechanism (notehom) and en- ;na 4

e desired diameter of the. mo I closed by a guard 35. For a detailed illustration and description of the guard 35, reference is made to applicants aforementioned application.

It will be observed by referring to Figs. 1 and 2 that the longitudinal axis of the wire 24 during its passage between the guide roll 19 and' its respective capstan 17 is dis` posed at a widely different angle, with respect to that of the wire as it passes between the other rolls and capstans, since the guide rolls 19 are of constant diameter and the capstans 17-l7 of different diameters. The die block 21 comprises a horizontally disposed body portion 36 having secured thereto shelves 37 and 38 (Figs. 3 and 4), each of which is adapted to support a series of dies 28 thereon, each die being mounted therein With the txis of its reducin g aperture conicident With the axis of the wire bein drawn therethrough. In the enbodiment of the invention illustrated, twelve dies are mounted upon the die block, six upon each shelf thereof. The twelve dies are alternatelyarranged, reading from the bottom of Fig. 2, first on the lower shelf and then the uppcr and then the lower, etc. The first five dies distributed alternately upon the two' shelves, reading from the bottom of Fig. 2, are each mounted upon a surface 40 formed at a different and definite angle, all inclined toward -the right as viewed in Figs. 1, 2, and 4. The

sixth die is carried upon the upper shelf 37 and is mounted upon a horizontally disposed surface 41 formed thereon. The next six dies are also distributed alternately upon the two shelves, each being mounted upon a surface 42 formed at a different and definite angle, all inclined toward the left as Viewed in Figs. 1, 2, and 3. By providing the mounting just described for the drawing dies in a wiredrawing machine wherein each die is positioned' with the axis of its reducing aperture coincident' with the axis of'the wire being drawn therethrough, it will be apparent that the wear upon the die will be substantially uniform around the reducing surface of the die and that consequently the finished wire will be drawn to the desired size and contour. Also, due to the uniform positioning of all of the dies, -with respect to the wire, each die being positioned with the axis of its reducing aperture coinci-' dent with the axis of each pass-of the wire therethrough, the tension on the wire is more evenly distributed, thereby minimizing the stopping of themachine due to breaks in the wire during the drawing operation, which breaks might occur if the dies were not mounted with their axes coincident with the axes of the portions of the wire being drawn therethrough.

What is claimed is:

1. In a wire drawing machine, a series of dies, a mounting therefor, means for drawing the wire through the. dies and for causing each pass of the wire therethrough to assume a different angle from that assumed by the other passes, and means-for positioning each die in the mounting at a different angle, depending upon the angle at which the wire is drawn therethrough.

2. In a wire drawing machine, a series of dies, a mounting therefor, means for drawing the wire through the dies and for causing each pass of the wire therethrough to assume a different angle from the horizontal, and means for positioning each die difi'erently in the mounting with the axis of its reducing aperture coincident with the axis of the wire being drawn vertically therethrough.

3. In a wire drawing machine, a series of uniform diameter guide rolls, a stepped capg stan positioned with each step thereof in line With one of said guide rolls which results in the wire passing between the guide rolls and capstan assuming difl'erentangles, a die located between each step of the capstan and one of the guide rolls, and means for mounting said die in accordance with the particular angle assumed by the wire whereby the axis of its reducing aperture coincident with the axis of the wire being drawn therethrough.-

4. In a wire drawing machine, a series of uniform diameter guide rolls, a stepped capstan positioned with each step' thereof in line with one of said guide rolls, a series of dies, and a die block for supporting said dies located between said guide rolls and stepped capstan, said die block provided with a series of die supporting surfaces, each disposed at such an angle that each die will be mounted with the axis' of its reducing aperture coincident with the axis of the wire being drawn vertically therethrough.

5. In a wire drawing machine, a series of uniform diameter guide rolls, a stepped capstan positioned therebelow with each step thereof in line with one of said guide rolls, the axes of said guide rolls and capstan being disposed in' substantially the same vertieal plane, a series of dies, and a die block for supportingsaid dies located between said guide roll and stepped capstan, said die block provided with a plurality of horizontally disposed shelves, each provided with a series of die supporting surfaces, each disposed at a different angle so that the dies will be mounted with the axes of their reducing apertures in a predetermined and uniform relation to the axis of the wire being drawn vertically therethrough.

6. In a wire drawing machine, a series of dies, a mounting therefor, means for drawing wire through the dies and for causing each pass of the wire to assume a different angle, and means associated with said mounting and disposed at an angle different tao for each die to insure the axis of the redueing aperture of the die being coincident with the axis of the wire being d'awn therethrough.

7. In a wire drawing machine, a series of dies, means for drawing wire through the dies and for causing each pass of the wire m assume a liflerent angle, a die block comprising a. plurality of die shelves, and means individual to the shelves inclined in opposite directions and disposed to insre the axis of the reduc'ing upert-'e of eachdie being coincident with the axis of the wire being dr'wn therethrough.

In witness where0f,\I herento subscribe my name this eighth day of October, A. D.

SAMUEL MMULLAN. 

